Following is a table of shutdowns at nuclear power plants in Spain for 2012, according to data from Madrid-based utilities lobby Unesa.

Five of the nation’s eight reactors were operating today, according to the website of Consejo de Seguridad Nuclear, the country’s nuclear regulator. Vandellos II, Almaraz-2 and Trillo are halted for planned maintenance. Spain produces about 20 percent of its electricity from atomic energy.

The table lists halts for plants owned by Endesa SA (ELE), Iberdrola SA (IBE), Gas Natural SDG SA (GAS) and Nucleanor SA. No halts are planned this year for the 1,092-megawatt Cofrentes, 1,027- megawatt Asco-2 or 466-megawatt Santa Maria de Garona reactors, Unesa said.

An asterisk highlights a change from the last version of the table.

Unit Name                Megawatts      Out            Return
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Almaraz-2                1,045          May 7         *June 16
Trillo                   1,066          May 19         June 15
Vandellos II             1,087          May 26         July 9
Asco 1                   1,033          Oct. 27        Dec. 10
Almaraz-1                1,035          Nov. 4         Dec. 17

To contact the reporter on this story: Rachel Morison in London at rmorison@bloomberg.net

To contact the editor responsible for this story: Lars Paulsson at lpaulsson@bloomberg.net